com.hazelcast.internal.eviction.impl.strategy.sampling

Interface SampleableEvictableStore<A,E extends Evictable>

All Superinterfaces:

EvictableStore<A,E>

All Known Subinterfaces:

SampleableCacheRecordMap<K,V>, SampleableNearCacheRecordMap<K,V>

All Known Implementing Classes:

CacheRecordHashMap, HeapNearCacheRecordMap, QueryCacheRecordHashMap

public interface SampleableEvictableStore<A,E extends Evictable>
extends EvictableStore<A,E>

Interface for sampleable store implementations that holds Evictable entries to evict.

Method Summary

Modifier and Type	Method and Description
<C extends EvictionCandidate<A,E>> Iterable<C>	sample(int sampleCount) The sample method is used to sample a number of entries (defined by the samples parameter) from the internal data structure.

Methods inherited from interface com.hazelcast.internal.eviction.EvictableStore

evict

Method Detail

sample

<C extends EvictionCandidate<A,E>> Iterable<C> sample(int sampleCount)

The sample method is used to sample a number of entries (defined by the samples parameter) from the internal data structure. This method should be executed in a constant time to deliver predictable timing results of the eviction system.

Parameters:

sampleCount - Entry count to be sampled

Returns:

Multiple EvictionCandidate to be evicted